baber/WOPTO huggingface dataset:
Patent GB-1080555-A (GB)
Title: Improvements in or relating to magnetic thin film storage apparatus
Inventor: SEITZER DIETER
IPC: G11B5/66
Filed: 1964-09-02
Abstract: 1,080,555. Circuits employing bi-stable magnetic elements; semi-conductor pulse circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 2, 1964 [Sept. 27, 1963], No. 35902/64. Headings H3B and H3T. Magnetic thin film storage apparatus includes a pair of matched impedances connected in series across a pair of matched bit/sense lines, a drive amplifier connected to supply drive pulses to both lines in common and a sense amplifier connected across the pair of bit lines. The sense amplifier may be connected to the bit lines either directly or through a transformer. In a simple arrangement the matched impedances are diodes D1, D2, which present a high impedance to sense signals and a low impedance to drive currents (Fig. 3), or simple resistors (Fig. 2, not shown), or tunnel diodes (Fig. 6, not shown). In the tunnel diode arrangement an additional tunnel diode is shunted across the drive amplifier and a source of D.C. is connected in series with this parallel circuit. The matched tunnel diodes preamplify the sense signal in this arrangement. The output may alternatively be amplified by transistors T1, T2 (Fig. 5), which also provide the matched impedances. In a modification of this arrangement tunnel diodes are connected between the collectors of T1, T2 and a common point which is connected to the centre tap of the transformer primary by way of a voltage source (Fig. 8, not shown). In Fig. 4 the matched impedances are included in the last stage of the drive amplifier. The final embodiment (Fig. 9, not shown) includes tunnel diodes shunted by resistors and connected between the bit lines and a common point, which point is connected to the centre tap of the transformer primary by a voltage source. The drive amplifier is connected directly between the bit/sense lines and the common return path. The shunt resistors may be selected so that oscillation-free amplification of the sense signal may be obtained.
Patent GB-1028121-A (GB)
Title: Improved barbed nail and method of making same
Inventor: WILLIAMS EDWARD
IPC: B21H7/14
Filed: 1962-09-21
Abstract: 1,028,121. Rolling nails. GUEST, KEEN & NETTLEFOLDS (SOUTH WALES) Ltd. Sept. 4, 1963, No. 35949/62. Heading B3M. [Also in Division F2] Barbed nails (see Division F2) are made by passing a continuous length of wire 16 between toothed rolls 17 before passing to heading and pointing apparatus. There may be a pair of rolls to produce an oval-sectioned wire with two opposed rows of barbs but to produce nails of a generally square section, with two pairs of opposed rows of barbs, there may be two pairs of opposed rolls in sequence, each pair in a plane at right angles to the plane of the other pair or there may be two pairs of rolls 17, Fig. 4, at one station on the wire and arranged to be freely rotatable in a common frame (not shown) on which are mounted four sets of bearings 23 for the spindles 24. In the latter arrangement the roll peripheries overlap as shown and the rolls and gears are adjustable axially to suit the diameter of the wire 16. Bevel gears 25 ensure uniform speed.
Patent GB-338379-A (GB)
Title: An improved magnet adjusting device for electric measuring instruments
IPC: G01R11/10
Filed: 1929-11-25
Abstract: 338,379. Landis et Gyr Soc. Anon. Jan. 22, 1929, [Convention date]. Electric and magnetic.-The driving disc of an electric meter is mounted on a carrier member upon which rests a plate that supports the magnets, this plate being slidable by means of a screw with its axis in the plane of the track on which the magnet supporting plate slides. As shown applied to the brake magnets of an induction motor meter, the brake magnets 10 are mounted on a plate 6 which slides on a plate 1 forming part of the meter. In the plate 1 are two slots 2 through which extend screws 5 securing the plate 6. The fixed plate 1 carries a guide lug 3 which engages a slot 7 so as to form with the slots 2, a parallel guide for the plate 6. The plate 6 is formed with a slot 13 stepped as shown, an arc-shaped bridge-piece 15 being bent down at right-angles. Welded to the plate 1 is a cross-piece 16 having a screw-threaded hole in which fits a screw 19, which is reduced in diameter for part of its length as shown. On the portion of smaller diameter is a nut 17 engaging lateral notches in the sides of the slot 13. One part of the screw 19 has a right-handed thread and the other has a left-handed thread, so that, on slackening the screws 5 and turning the screw 19, the plate 6 carrying the magnets may be adjusted over the plate 1. The axis of the screw 19 is arranged to lie in the plane between the plates 1, 6 so that bending action and consequent jamming are avoided. Instead of the right and left handed screw 19, a screw with a single thread may be arranged to be immovable axially in one of the parts 16, 17.
Patent GB-165019-A (GB)
Title: Improvements in and relating to barrels and like receptacles
IPC: B65D8/14
Filed: 1920-12-23
Abstract: 165,019. Dick, J. M. Dec. 23,1920. Collapsable metal barrels.-In order that they can be nested for transport when empty, barrels &c. are formed in two sections joined together at or near the greatest diameter by means of a. joint C, comprising an annular projection or head d on one part A which takes into an upwardly extending flange e on the other part B. The joint is rendered tight and the sections secured together by means of lead, lead wool, or other packing h.
Patent GB-409825-A (GB)
Title: Improvements in hydraulic operated brakes
IPC: B60T11/10
Filed: 1932-12-21
Abstract: 409,825. Hydraulic brakes. AUBIN, E., Elmstead, West Wittering, near Chichester, Sussex, and CLAREMONT, A. W., Vernon House, Sicilian Avenue, Bloomsbury, London. (Representatives of ROYCE, SIR F. H.) Dec. 21, 1932, No. 36146. [Class 103 (i).] In order to prevent leakage of liquid past the pistons of the brake operating cylinders of hydraulic brakes, the piston, in its inoperative position, is adapted to seal off the cylinder from the pipe which connects it to the master cylinder. The piston a<1> carries a member f to which is secured a washer of indiarubber or the like which seats against the end of the cylinder a, as shown, when the piston is in the inoperative position. The pipe g leads to the master cylinder. The piston has a cup-washer d<1> secured by nut d and pressed outwards by a spring ring d<2>. The piston engages a lever bl on a shaft b<3> which also carries a lever c connected to the brakes.
Patent GB-1378646-A (GB)
Title: Implements for the displacement of crop lying on the ground
IPC: A01D78/10
Filed: 1973-05-09
Abstract: 1378646 Displacing crop by rotary rake members TEXAS INDUSTRIES Inc 9 May 1973 36262/74 Heading A1F The implement of Specification 1,378,645 is modified by the inclusion of a tension spring 116 which is secured to lugs 114 and 115 mounted respectively on the ring 15 and a spoke 24, the spring 116 assisting the return of the tines 10 from the working position to the transport position. For Figure see next column
Patent GB-177849-A (GB)
Title: Improvements in portable hoists or elevators
IPC: B66F9/02
Filed: 1920-12-29
Abstract: 177,849. Rardaker, J. T. Dec. 29, 1920. Winch-actuated hoists with guided platforms. -In portable hoists the electric motor driving the hoisting mechanism is mounted on a pivoted table and is put in gear with the winding drum by tilting the table, means being provided whereby the supply of current is cut off when the platform reaches any desired height. The motor 6, Fig. 1, is mounted on a table 4 which is pivoted in the base 2 and can be tilted by depressing a pedal 5 against the resistance of a spring 5a. A belt 8 passes round a flanged pulley 7 on the motor shaft and a pulley 9 on a countershaft 10 which is geared to the shaft of the winding drum 13. In the position shown, the belt 8 is loose and the shaft 10 idle, but if the table 4 is tilted, the belt is tightened and the winding mechanism is driven. A ratchet wheel 28 on the motor shaft is engaged by a pawl when the motor is in the position shown, but is freed when the table is lowered. The descent of the platform is controlled by a brake 20a applied by a pedal 19. In order that current may be cut off at any desired height of the platform, a switch 23 is non-rotatably mounted on a threaded shaft 22 geared to the shaft 13a and a stop piece 24 slidably mounted on a graduated indicator is placed in its path.
Patent GB-1529712-A (GB)
Title: Dc/dc converter power supply circuits
IPC: H02M3/335
Filed: 1975-09-04
Abstract: 1529712 DC-DC converters SIEMENS AG 4 Sept 1975 [20 Sept 1974] 36382/75 Heading H2F A D.C.-D.C. converter comprises a switching transistor T1 connected through the primary winding L1 of a transformer across the output of a rectifier bridge B, a secondary winding L2 of the transformer and members D2, C2 providing a D.C. output voltage U A  determined by a control circuit R for transistor T1, the circuit R being supplied with an operating voltage from an auxiliary winding L3 of the transformer through diode D5 and with a starting voltage (when T1 is initially non-conductive) from a starting circuit E whereby, when a switch S is closed to energize the bridge B, a capacitor C11 is charged through resistors R11, R13 until a trigger diode D11 breaks down and fires a thyristor Ty11, which thereupon transfers the charge on C11 through a surge limiting resistor R14 to a capacitor C12 connected to the input of circuit R. Capacitor C12 subsequently controls a transistor T12 which is turned on by the voltage produced across capacitor C12 by members L3, D5 so that capacitor C11 cannot charge during this condition. A circuit comprising members T11, R12, R13, D12 responds to the appearance of a surge voltage at the output of bridge B and turns on transistor T12 to prevent charging of capacitor C11 during the surge condition. Circuit R comprises an operational amplifier VI receiving, from members L3, D3, C4, R1, a signal representative of the output voltage U A  and, from members R2, D4, a desired output voltage signal, and a comparator V2 and transistor T2 to provide feedback and control the switching of transistor T1. The starting circuit may be modified, Fig. 2 (not shown), by replacing the resistor R14 by a choke (L51) and using an extra transistor (T52) to short circuit the capacitor (C51) during a surge condition, the latter transistor also controlling the amplifier V1 to switch off the transistor T1, if the output voltage of bridge B exceeds a value corresponding to that set by Zener diode D4. A Zener diode (D55) in the other transistor (T53) circuit shunting capacitor (C51) prevents its complete discharge in order to enable this capacitor to supply a transistor (T51) responsive to the output of bridge B. The thyristor Ty11 may be replaced by a unijunction transistor. Other modifications are the use of the converter output voltage to supply the circuit R after starting and the omission of capacitor C12, in which case the thyristor Ty11 remains on after starting so that capacitor C11 is charged by the supply L3, D5 or the converter output voltage.
Patent GB-993820-A (GB)
Title: Improvements in or relating to mechanical seals
IPC: F16J15/38
Filed: 1963-09-16
Abstract: 993,820. Mechanical seals. GARLOCK Inc. Sept. 16, 1963 [Oct. 9, 1962], No. 36386/63. Heading F2B. A mechanical seal for a rotary shaft 10 comprises an axially slidable and rotatable sealing sleeve 24 which is urged into facial sealing contact with a stationary sealing ring 18 by spring means 38 and sealed to the shaft by packing 32 axially slidably housed in a counterbore in the sleeve 24. The springs 38 are compressed between an adaptor ring 42 and a sleeve 34 secured to the shaft by set screws 36 projecting into axial slots 46 in the sleeve 24 which has a sealing ring insert 26. In the arrangement shown in Fig. 1, the sealing pressure at the faces 28, 30 due to the springs is augmented by the pressure of the sealed fluid in the casing 14 acting on the sleeve 24, ring 42 and packing 32. In the modification shown in Fig. 3, the packing 56 comprises a V-ring 60 and an expander 62, both of polytetrafluorathylene, which are moved to the left as shown by the pressure of the sealed fluid in the casing 12 which pressure acts on the shoulder 44 of the sleeve 24 to urge the latter against the ring 18.
Patent GB-820255-A (GB)
Title: Steam power plants employing forced-flow steam generators
IPC: F22G5/00
Filed: 1957-11-22
Abstract: 820,255. Feedwater supply and heating systems for steam boilers. SULZER FRERES S. A. Nov. 22, 1957 [Jan. 31, 1957]. No. 36412/57. Classes 64(1) and 123(2) In a steam power plant comprising a forced-flow boiler 1 of small storage capacity supplying a turbine set 2, transient fluctuations of steam temperature or pressure with consequent changes in turbine output are rapidly compensated by varying the bled steam flow from the turbine to feedwater heaters to make more or less steam available in the turbine to restore its output to the required value. In the arrangement shown, the turbine exhausts into a condenser 3 having a condensate trap 4 with a level regulator 5. A condensate pump 6 delivers water through preheaters 15, 15<SP>1</SP> respectively supplied with steam tapped from the turbine 2 through lines 23, 22 into a hot water accumulator tank 16, the preheating dome 24 of which is supplied with bled steam through a line 21. A feed pump 17 withdraws hot water from the tank 16 and delivers it through a high pressure preheater 18 supplied with bled steam through a line 20 to the boiler. A cold water acumulator tank 7 is shuntconnected to the pipe from the pump 6 to the first preheater 15 by inlet and outlet pipes 8, 9 respectively controlled by valves 11, 10, the outlet pipe 9 also including a pump 19. Between the point at which the pipe 9 enters the pipe from the pump 6 and the preheater 15 is a valve 13. The valves 10, 11, 13 are controlled by an output-dependent impulse transmitter 12. In operation, a part of the steam flowing through the turbine is tapped off through pipes 20... 23, the quantity being proportional to the flow of water through the preheaters 15, 15<SP>1</SP>, 24 and 18 so that if, for example, the steam pressure or temperature falls and the turbine output temporarily drops in consequence, the transmitter 12 throttles or closes the valve 13 whereby the water flow through the preheaters 15, 15<SP>1</SP> is reduced or stopped. The amount of steam tapped from the turbine drops proportionally correspondingly increasing the quantity of steam available to produce work in the turbine and thus increasing its output to the required value. As the valve 13 closes, the valve 11 is opened so that the tank 7 can take up the transient difference between the constant flow delivered by the pump 6 and the reduced flow through the valve 13. Stored hot water is delivered from the hot water accumulator 16 to the pump 17. In the event of a transient increase in steam temperature or pressure with consequent rise in turbine output, the transmitter 12 temporarily opens the valves 10, 13 and starts the pump 19 to deliver additional water to the preheaters 15, 15<SP>1</SP>. This results in an increased consumption of tapped steam and a consequential decrease in turbine output to the required value. Surplus water is stored in the tank 16. In a modification, the pipe 9 returns water to the trap 4, the pump 19 being omitted.
Patent GB-1357923-A (GB)
Title: Apparatus for supplying current to an electrical welding set
Inventor: KUSZLEYKO R
IPC: H02P13/00
Filed: 1971-08-04
Abstract: 1357923 Power supplies for welding sets INSTYTUT SPAWALNICTWA 4 Aug 1971 [13 Aug 1970] 36672/71 Heading H2H A power supply for a welding set comprises a transductor 3, a transformer having two secondary windings 2 and two primary windings 1 and switches 4, 5 which are operable to connect the primary and secondary windings respectively in series to provide low welding currents and respectively in parallel to provide high welding currents. With the switches 4, 5 in their shown positions the transformer windings are connected in series, the parallel connections of the windings being obtained by changing the switches to their other positions.
Patent GB-766742-A (GB)
Title: Improvements in or relating to the production of substituted aromatic compounds
IPC: C07C4/00
Filed: 1954-12-20
Abstract: Aromatic compounds having at least one nuclear substituent consisting of an aliphatic group containing at least two carbon atoms are made by contacting a diarylalkane having at least two carbon atoms in the alkyl group, and having the aryl groups attached to the same carbon atom of the alkyl group, at elevated temperature, e.g. 350-450 DEG C., in the presence of hydrogen, with a high melting point, inorganic, acidic composite catalyst exemplified by nickel, iron, cobalt, palladium, platinum or rhodium on acid-treated or untreated Attapulgus clay, kaolin, alumina, zirconia, titania, molybdenum disulphide, nickel-tungsten sulphide, or an alumina-, zirconia-, titania- or thoria-silica. Examples are concerned with conversions of 1,1 - di - p - tolylethane at pressures of 250-530 lb./sq. in. to ethyltoluene and toluene, 1,1-di-p-tolylethane at one atmosphere hydrogen pressure to p-methylstyrene and toluene, 1,1-bis-(p-ethylphenyl) ethane to diethylbenzenes and ethylbenzene, 1,1-diphenylethane to styrene and ethylbenzene, 1,1-di-(p-tert. butylphenyl) ethane to p-tert. butylstyrene, and 1,1-di- (p-hydroxyphenyl) ethane to ethylphenol and phenol.  The reaction is exothermic, and endothermic dehydrogenation of an added naphthene to the corresponding aromatic hydrocarbon may be effected simultaneously, the aromatic hydrocarbon so obtained being available for alkylation to the diarylalkane employed in the reaction.
Patent GB-969791-A (GB)
Title: Process for the production of shaped silicon refractory objects
IPC: C04B35/14
Filed: 1961-10-13
Abstract: Shaped refractory articles of silicon having a density near the theoretical maximum are prepared by depositing silicon on a mould coated with finely divided silica, by thermal decomposition at 800-1300 DEG  C. of one molar proportion of SiHCl3 and/or SiCl4 in the presence of 5-30 molar proportions of a carrier gas, the deposition being continued for at least 5 hours and the moulded silicon article so produced is then cooled slowly to avoid cracking preferably in an inert atmosphere.  In an example a fused quartz mould was coated with amorphous silica by burning SiHCl3 and H2 in air, the temperature was raised to 935 DEG  C. and SiHCl3 and H2 passed, the flow rate of the latter being about ten times that of the former, and the mould maintained at 1000 DEG  C. for 72 hours.  The silicon thus prepared had a density of 98-99% of the theoretical crystal density and transmitted infra red light of wavelength 1-15 microns.ALSO:Shaped refractory articles of silicon having a density near the theoretical maximum are prepared by depositing silicon on a mould coated with finely divided silica, by thermal decomposition at 800-1300  DEG C. of one molar proportion of SiHCl3 and/or SiCl4 in the presence of 5-30 molar proportions of a carrier gas, the deposition being continued for at least 5 hours and the moulded silicon article so produced is then cooled slowly to avoid cracking preferably in an inert atmosphere. In an example a fused quartz mould was coated with amorphous silica by burning SiHCl3 and H2 in air, the temperature was raised to 935  DEG C. and SiHCl3 and H2 passed, the flow rate of the latter being about ten times that of the former, and the mould maintained at 1000  DEG C. for 72 hours.  The silicon thus prepared had a density of 98-99% of the theoretical crystal density and transmitted infra red light of wave length 1-15 microns.
Patent GB-861641-A (GB)
Title: Storage tank for liquid oxygen and the like in rockets
Inventor: WEBSTER THOMAS JOHN
IPC: F17C3/10
Filed: 1957-11-26
Abstract: 861,641. Storing liquid oxygen. BRITISH OXYGEN CO. Ltd. Nov. 18, 1958 [Nov. 26, 1957], No. 36848/57. Class 8(2). In a socket storage tank for containing liquid oxygen or other gaseous oxidant in a liquefied state and at a low temperature, an outlet for the liquid is located in the base of the tank and an internal baffle system is provided which functions to cause liquid to be drawn off from the tank through the outlet from the vicinity of the walls of the tank, whereby the liquid most recently subjected to the influx of heat through the tank walls is drawn off first and there is suppression of boiling of the liquid during powered flight. The bottom outlet of the tank 10, Fig. 1, may be connected through a pump 13 to a socket motor (not shown), and the other side of the pump may be connected through a control valve 16 and an evaporator/superheater 17 to the top of the tank. Inside the tank there is a cylindrical baffle with perforated walls so that liquid flows as shown by the arrows ; thus heat leaking into the tank is continuously removed by the flow of liquid adjacent the walls. If the tank is slightly pressurised, boiling may be suppressed throughout the flight of the socket, and if valve 16 is opened during flight to allow gas at a temperature of 100‹C. to pass from the superheater 17 to the tank, the tank will contain relatively hot low density gas at the end of the discharge period. In a modification, Fig. 2 (not shown), the baffle is provided with apertures which increase in size from bottom to top.
Patent GB-756835-A (GB)
Title: Combined rebound damping and homing device for a moving machine part
IPC: F16F7/01
Filed: 1954-12-22
Abstract: 756,835. Vibration dampers. NATIONAL CASH REGISTER CO. Dec. 22, 1954 [Jan. 4, 1954], No. 37050/54. Class 108 (3). [Also in Group XIX] In order to assist the homing of a machine part, e.g. a reciprocating bar 5, against a stop and inhibit rebound from the stop, teeth 18 on the member are in loose mesh with a rotatable gear 16. The bar 5 is adapted to be reciprocated by the follower 8 of a cam 11 and is moved up to a stop 15 when the follower is released to its spring 10 by a drop 13 in the cam. The inertia of the gear causes it to overrun the bar when arrested and the forward impact of its teeth against the teeth 18 assists a full stroke of the bar besides resisting rebound. The gear also resists excessive acceleration of the bar. The teeth of the gear are bevelled, and the gear is mounted on an adjustable eccentric 21 to allow the tooth engagement to be varied. The gear may be constructed with cavities 22 partly filled with lead shot 23 or other heavy material. The invention is applicable to the differential actuators and line-finding mechanisms of calculating and similar machines. It is also applicable to the rotary driving mechanisms of such machines, for equalizing the load over the machine cycle and ensuring completion of the cycle.